CN113266070B

CN113266070B - Municipal drainage pipeline pull throughs

Info

Publication number: CN113266070B
Application number: CN202110470155.1A
Authority: CN
Inventors: 陈孟达; 李朝; 胡剑锋
Original assignee: Zhejiang Yicheng Environmental Research Co ltd
Current assignee: Zhejiang Yicheng Environmental Research Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2022-08-12
Anticipated expiration: 2041-04-28
Also published as: CN113266070A

Abstract

The utility model relates to a municipal drainage pipe pull throughs belongs to the technical field of municipal administration pipeline clearance, and it includes the casing, and the water inlet has been seted up to the one end of casing, is provided with the jet to water inlet lopsidedness on the outer wall of casing, water inlet and jet intercommunication, the jet is provided with a plurality ofly along the even interval of circumference of casing, the one end that the water inlet was kept away from to the casing slides along the casing axial and is connected with the impact head, be provided with the actuating mechanism who is used for ordering about impact head reciprocating motion on the casing in the casing. The staff leads to water through connecting the water pipe at the water inlet of casing in to the casing, and water sprays and erodees on the pipeline inner wall from jet port department, makes the casing forward motion, orders about the collision head at casing the place ahead reciprocating motion again, and when the collision head assaulted the barrier, the forward force of collision head and the forward force combined action that rivers applyed the casing, this application has the effect that improves the clearance effect to the pipeline.

Description

Municipal drainage pipeline pull throughs

Technical Field

The application relates to the field of municipal administration pipeline clearance, especially, relate to a municipal administration drainage pipe pull throughs.

Background

The municipal pipeline is used for drainage fields such as highway, railway subgrade, subway engineering, waste landfill, tunnel, green belt, playground and slope protection caused by higher water content according to different drainage requirements, and underground irrigation and drainage systems of agriculture and horticulture; the inside desilting of municipal administration pipeline is dredged the clearance with the pipeline, strikes off the silt of pipeline the inside and discharges to keep the long-term unblocked of water conservancy pipeline, in order to prevent that the waterlogging from taking place in the city, and pipeline desilting work has become an important work that the drainage department is not neglected now.

The patent of grant publication No. CN208934104U discloses a rotation type pipeline mediation rifle head and contain its pipeline pull throughs, the on-line screen storage device comprises a base, cup joint the rotator on the base, cup joint on the base and be located the bearing group between rotator and the base and set up the seal assembly in the rotator, the opening has been seted up to the one end of rotator, and the opening cup joints on the base, the other end of rotator is provided with preceding water jet nozzle and back water jet nozzle, be formed with first water inlet channel in the base, and the one end of base is provided with the water inlet, its other end is provided with the delivery port that is linked together with preceding water jet nozzle and back water jet nozzle.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the pipeline mediation rifle head passes through the preceding water jet nozzle of front end and clears up the barrier of rifle head advancing direction, but the water current of preceding water jet nozzle injection can form recoil after assaulting with the barrier, with the forward force part that the water jet nozzle sprays and produce for the rifle head forward motion on the pipeline inner wall cancel each other, the rivers that the preceding water jet nozzle sprays in the pipeline simultaneously also make the reaction force that back water jet nozzle spun efflux produced on the pipeline inner wall weaken for the rifle head is to the cleaning action of pipeline reduction.

Disclosure of Invention

In order to improve the clearance effect to the pipeline, this application provides a municipal drainage pipe pull throughs.

The application provides a municipal drainage pipeline pull throughs adopts following technical scheme:

the utility model provides a municipal drainage pipeline pull throughs, includes the casing, the water inlet has been seted up to the one end of casing, be provided with the jet to water inlet one side slope on the outer wall of casing, water inlet and jet intercommunication, the jet is provided with a plurality ofly along the even interval of circumference of casing, the casing is kept away from the one end of water inlet and is slided along the casing axial and be connected with the impact head, be provided with the actuating mechanism who is used for ordering about impact head reciprocating motion on the casing.

By adopting the technical scheme, when a worker cleans and dredges municipal pipelines by using the dredging device, the water pipe is connected with the water inlet of the shell, the shell is placed into the pipeline and is filled with water, the water is sprayed from the spray ports and scours the inner wall of the pipeline, the shell generates propelling force in the direction away from the water inlet by means of the counterforce generated in the process that water flow sprayed by the plurality of spray ports impacts the pipeline, so that the shell moves forwards, the driving mechanism is started to drive the impact head to reciprocate in front of the shell, when the impact head impacts an obstacle, the driving mechanism drives the advancing force of the impact head and the advancing force applied by the water flow to the shell, the advancing force blocked by the impact head in the damaged advancing direction is enabled to be larger under the combined action, so that the cleaning effect on the pipeline is improved, and under the same water inflow in the water inlet, the water is only sprayed from the spray ports to generate the advancing force on the shell, the advancing speed of the shell in the pipeline is improved, and the cleaning efficiency of the pipeline is improved.

Optionally, the driving mechanism includes an elastic member, a rotating ring, a guide cylinder and a push rod, an installation cavity is arranged at one end of the casing far away from the water inlet along the self axial direction, one end of the impact head close to the casing water inlet is connected in the installation cavity in a sliding manner along the casing axial direction, a strip-shaped hole communicated with the installation cavity is arranged on the outer wall of the casing, a connecting rod is fixedly connected to the impact head, the connecting rod is connected in the strip-shaped hole in a sliding manner along the axial direction of the casing, the rotating ring is coaxially rotatably sleeved on the outer wall of the casing, the guide cylinder is coaxially sleeved on the casing and positioned at one side of the rotating ring far away from the impact head, the guide cylinder is fixedly connected with the connecting rod, the push rod is fixedly connected to one side of the rotating ring close to the guide cylinder, the end face of the guide cylinder close to the rotating ring includes a slope section and a fall section, the slope section is obliquely arranged along the circumferential direction of the guide cylinder, and the fall section is parallel to the axial direction of the guide cylinder, the ejector rod is connected on the end face, close to the rotating ring, of the guide cylinder in a sliding mode, a first driving piece used for driving the rotating ring to rotate is arranged on the shell, the elastic piece is arranged in the installation cavity, and the elastic piece is used for driving the impact head to extend out of the shell.

Through adopting above-mentioned technical scheme, after starting first driving piece, first driving piece drives the swivel becket and rotates, the swivel becket rotation process, ejector pin on the swivel becket moves on the guide cylinder is close to the slope section of swivel becket one side, move to the top of slope in-process at the ejector pin from the toe of slope section, guide cylinder and connecting rod move to casing water inlet one side, and drive the nearly casing of striking head, the striking head withdraws the in-process, the casing continues to advance and is close to the barrier, after the ejector pin crossed the top of slope section, the ejector pin moves the toe to the slope section fast from the fall section, the striking head is under the effort of elastic component, keep away from the casing fast, it is broken to the barrier striking, the crushing dynamics of striking head is big, dredge the pipeline is effectual.

Optionally, the first driving piece is the shower nozzle, the inside cavity of swivel becket, the swivel becket is close to the inner wall of casing and has offered annular opening along swivel becket circumference, annular opening is used for communicating the water inlet and the cavity in the inside of swivel becket, the jet is seted up on the outer wall of swivel becket to with the cavity intercommunication in the inside of swivel becket, the shower nozzle is connected on the jet nozzle, the axis of shower nozzle is crisscross with the axis of casing.

Through adopting above-mentioned technical scheme, in the in-process of leading to water in the casing from casing water inlet department, rivers get into the swivel becket from the casing, and get into the shower nozzle from the jet on the swivel becket outer wall, through the water jet direction of shower nozzle to the jet, shower nozzle spun rivers after on impact pipeline inner wall, produce the casing with the eccentric thrust of casing axis, under the thrust reaction effect of a plurality of shower nozzles, the swivel becket is rotatory on the outer wall of casing, save extra increase power supply, the swivel becket rotates conveniently.

Optionally, the ejector pins are uniformly arranged at intervals along the circumferential direction of the rotating ring, a plurality of groups of slope sections and drop sections are uniformly arranged on the guide cylinder at intervals along the circumferential direction of the guide cylinder, and the number of the slope sections is an integral multiple of the number of the ejector pins.

Through adopting above-mentioned technical scheme, the swivel becket rotation in-process, many ejector pins slide on the domatic of guide cylinder simultaneously for the even atress of guide cylinder, device stability is good.

Optionally, one end of the ejector rod close to the guide cylinder is rotatably provided with a roller, and the roller is in rolling contact with the guide cylinder.

Through adopting above-mentioned technical scheme, at the rotatory in-process of swivel becket, the gyro wheel on the ejector pin rolls on the guide cylinder, effectively reduces swivel becket and rotates the in-process, the frictional force between ejector pin and the guide cylinder, makes the guide cylinder motion more stable, extension fixture's life.

Optionally, one side that lies in the jet on the casing and is close to the impact head still is provided with the mechanism of decontaminating, the mechanism of decontaminating includes outer connecting rod group, slider and flexible membrane, outer connecting rod group includes first dwang, second dwang, the one end of first dwang is articulated with the casing, the other end is articulated with the one end of second dwang, the other end of second dwang slides along the axial of casing through the slider and connects on the casing, the one end that first dwang was kept away from to the second dwang is articulated with the slider, be provided with the second driving piece that is used for ordering about the slider removal on the casing, outer connecting rod group is provided with the multiunit along the even interval in circumference of casing, the flexible membrane sets up between adjacent two sets of outer connecting rod groups, first dwang and second dwang all with flexible membrane fixed connection.

Through adopting the above technical scheme, pass through in the casing follow pipeline, impurity on the pipe inner wall erodees the back, the staff need pull out the casing from the pipeline, at this moment, start the second driving piece, order about slider on the casing and be close to the articulated axis department of first dwang on the casing, thereby make contained angle reduce gradually between first dwang and the second dwang, and tighten the flexible membrane to the outer wall of protrusion casing, pull out the casing in-process in following the pipeline, the flexible membrane fills the pipeline cross-section, and take out remaining difficult impact motion's impurity in the pipeline, the improvement is to the mediation clearance effect of pipeline.

Optionally, the second driving member is an air cylinder, the air cylinder is fixedly arranged on the housing, and a piston rod of the air cylinder is connected with the sliding block.

Through adopting above-mentioned technical scheme, when the staff removed the slider on the drive casing, through starting cylinder on the casing, the flexible in-process of cylinder piston rod can drive the slider and remove convenient to use on the casing.

Optionally, the slider includes the slip ring, the coaxial cover of slip ring is established on the casing, the second dwang rotates with the slip ring to be connected, and is adjacent two sets of still be provided with a plurality of interior linkage along slip ring circumference interval between the outer linkage, interior linkage and the inner wall connection of flexible membrane, interior linkage is used for supporting the flexible membrane.

Through adopting above-mentioned technical scheme, when ordering about the slider to the articulated axis removal of first pivot pole on the casing, the slider drives the slip ring and removes, the slip ring removes the in-process, it is out of shape to drive a plurality of bracing pieces that are located the flexible membrane inboard, support in the inboard of flexible membrane through the bracing piece, effectively prevent pulling out the casing in-process in the pipeline, the flexible membrane is damaged by impurity in the pipeline, improve flexible membrane life, and can better take impurity out in the pipeline, further improve the clearance effect to the pipeline.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the worker connects the water pipe to the water inlet of the shell, water is introduced into the shell, the water is sprayed from the spray port and washes the inner wall of the pipeline, the shell moves forwards, the impact head is driven to move in a reciprocating manner in front of the shell, and when the impact head impacts an obstacle, the advancing force of the impact head and the advancing force of the water flow applied to the shell act together, so that the cleaning effect on the pipeline is improved;

2. after the rotating ring is driven to rotate, the ejector rod on the rotating ring moves on a slope section of the guide cylinder, which is close to one side of the rotating ring, the impact head is driven to be close to the shell in the process that the ejector rod moves from a slope toe to a slope top of the slope section, the shell continues to advance to be close to the obstacle, after the ejector rod passes over the slope top of the slope section, the impact head quickly leaves away from the shell under the action of the elastic piece, the crushing force is large, and the pipeline dredging effect is good;

3. in the process of leading water from the shell water inlet to the shell, water flow enters the spray head from the spray opening on the outer wall of the rotating ring and is sprayed out, after the water flow sprayed out of the spray head impacts the inner wall of the pipeline, counter thrust eccentric to the axis of the shell is generated on the shell, under the action of the counter thrust of the plurality of spray heads, the rotating ring rotates on the outer wall of the shell, the additional power source is omitted, and the rotating ring is convenient to rotate.

Drawings

Fig. 1 is a schematic overall structure diagram of a pipeline dredging device according to an embodiment of the application.

Fig. 2 is a partial sectional structural schematic view of a pipeline dredging device in an embodiment of the application.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 4 is an overall structure schematic diagram of an opening state of the cleaning mechanism of the pipeline dredging device according to the embodiment of the application.

Fig. 5 is an overall structure schematic diagram of another view angle of the opening state of the cleaning mechanism of the pipeline dredging device according to the embodiment of the application.

Description of reference numerals: 1. a housing; 11. a water inlet; 12. an ejection port; 13. a mounting cavity; 14. a strip-shaped hole; 2. a striking head; 21. a connecting rod; 22. an extension pole; 3. a drive mechanism; 31. an elastic member; 32. a rotating ring; 33. a guide cylinder; 331. a slope section; 332. a drop height section; 34. a top rod; 35. a spray head; 36. a roller; 4. a dirt removing mechanism; 401. an outer linkage; 41. a first rotating lever; 42. a second rotating lever; 43. a slider; 44. a flexible film; 45. a cylinder; 46. a slip ring; 47. an inner linkage.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses municipal drainage pipe pull throughs. Referring to fig. 1 and 2, the pipeline dredging device comprises a shell 1, a flow channel is arranged in the shell 1, a water inlet 11 communicated with the internal flow channel is formed in one end of the shell 1, an installation cavity 13 is coaxially arranged at the other end of the shell, and an impact head 2 extending out of the shell 1 is installed in the installation cavity 13. The impact head 2 slides in the mounting cavity 13 in the axial direction of the housing 1. The outer wall of casing 1 has the round bulge loop along the integrative protrusion of self circumference, and coaxial rotation has cup jointed swivel 32 on the bulge loop, the inside cavity of swivel 32 to with the inside runner intercommunication of casing 1, it has a plurality of shower nozzles 35 that are used for water jet to distribute along self circumference evenly spaced on the outer wall of swivel 32.

Referring to fig. 2 and 3, in order to drive the impact head 2 to reciprocally extend and retract on the housing 1 along the axial direction of the housing 1, the housing 1 is provided with a driving mechanism 3, and in this embodiment, the driving mechanism 3 includes an elastic member 31, a guide cylinder 33 and an ejector rod 34. The diapire of installation cavity 13 extends to the outer swivel becket 32 of casing 1 along the casing 1 axial and keeps away from one side of striking head 2, and striking head 2 is including penetrating the extension rod 22 part in installation cavity 13, lies in on the casing 1 outer wall that one side that the swivel becket 32 kept away from striking head 2 offers the bar hole 14 of intercommunication installation cavity 13, and the length direction in bar hole 14 is unanimous with casing 1's axial. A connecting rod 21 is further welded and fixed on the extension rod 22 of the impact head 2, and the connecting rod 21 extends out of the housing 1 from the strip-shaped hole 14 and slides along the length direction of the strip-shaped hole 14. The guide cylinder 33 is coaxially sleeved outside the shell 1, and one end of the connecting rod 21 extending out of the shell 1 is welded with the inner wall of the guide cylinder 33.

Referring to fig. 1, 2 and 3, the guide cylinder 33 includes a slope section 331 and a fall section 332 near the side of the rotating ring 32. The slope section 331 is inclined from one end to the other end in the circumferential direction of the guide cylinder 33, and the step section 332 is parallel to the axis of the guide cylinder 33. The fall sections 332 and the slope sections 331 are uniformly provided with a plurality of pairs at intervals along the circumferential direction of the guide cylinder 33, and both ends of the fall sections 332 are respectively connected with the tops and the bottoms of the adjacent two slope sections 331. The push rod 34 is welded and fixed on the rotating ring 32, one end of the push rod 34 close to the guide cylinder 33 is rotatably provided with a roller 36, and the roller 36 is in rolling contact with the slope section 331 of the guide cylinder 33. The push rods 34 are uniformly arranged along the circumferential direction of the rotating ring 32 at intervals, the number of the upward slope sections 331 of the guide cylinder 33 is an integral multiple of the number of the push rods 34, and in the embodiment, the number of the push rods 34 is the same as that of the upward slope sections 331 of the guide cylinder 33.

The elastic member 31 is a spring, one end of the spring is welded and fixed to the inner wall of the housing 1, the other end of the spring is welded and fixed to the extension rod 22, and the spring is used for driving the impact head 2 to be far away from the housing 1. During the process that the ejector rod 34 slides from the slope toe to the slope top of the slope section 331 of the guide cylinder 33, the ejector rod 34 pushes the guide cylinder 33 away from the rotating ring 32, so that the impact head 2 moves into the mounting cavity 13, and after the ejector rod 34 passes over the slope top of the slope section 331, the impact head 2 rapidly breaks an obstacle in front of the shell 1 under the elastic force of the elastic member 31.

Referring to fig. 1, 2 and 3, in order to drive the rotation ring 32 to rotate, the housing 1 is provided with a first driving member, in this embodiment, a nozzle 35. The annular groove has been seted up along self circumference on casing 1's the outer wall, and swivel 32 rotates and installs in the annular groove, and swivel 32 is inside hollow, has seted up annular opening along swivel 32 circumference on the inside wall that swivel 32 is close to the annular diapire, has seted up the through-hole with casing 1 inside flow way intercommunication on the inner wall of annular groove, through-hole and swivel 32's annular opening intercommunication. The outer wall of the rotating ring 32 is provided with a jet orifice 12 communicated with the inside of the rotating ring 32, the spray head 35 is connected in the jet orifice 12 in a threaded manner, the water outlet of the spray head 35 faces to one side of the rotating ring 32 close to the water inlet 11, and the extension line of the axis of the spray head 35 is staggered with the axis of the rotating ring 32. In the process that the water flow is jetted out of the nozzle 35, the nozzle 35 applies thrust to the rotating ring 32 to push the housing 1 to move forward and can push the rotating ring 32 to rotate on the housing 1 in a tangential direction, and in order to improve the rotating force of the rotating ring 32, a plurality of nozzles 35 are uniformly arranged along the circumferential direction of the rotating ring 32 at intervals. When the impact head 2 approaches the shell 1, the shell 1 continues to advance in the process that water flow impacts the inner wall of the pipeline, so that when the impact head 2 is ejected out of the shell 1 again, the impact on the barrier can be ensured.

In other embodiments, the driving head 2 may also be an electric push rod that drives the housing 1 to reciprocate, the electric push rod is fixedly connected to the housing 1, a push rod of the electric push rod is fixedly connected to the driving head 2, and the driving head 2 is driven to move by electric power.

Referring to fig. 4 and 5, in order to smoothly clean the impurities in the pipeline out of the pipeline after the housing 1 and the impact head 2 dredge the blockage in the municipal pipeline, the housing 1 is further provided with a cleaning mechanism 4. In this embodiment, the purge mechanism 44 includes an outer linkage 401, an inner linkage 47, a slider, and a flexible membrane 44. In this embodiment, the sliding member is a sliding ring 46, a T-shaped block is welded and fixed on the inner wall of the sliding ring 46, a sliding groove matched with the sliding block 43 in shape is formed in the outer wall of the casing 1, and the sliding block 43 is connected in the sliding groove in a sliding manner along the axial direction of the casing 1. The outer connecting rod group 401 includes a first rotating rod 41 and a second rotating rod 42, one end of the first rotating rod 41 is hinged to one end of the second rotating rod 42, the other end of the first rotating rod 41 is hinged to the end portion of the casing 1 close to one end of the impact head 2, the other end of the second rotating rod 42 is hinged to the sliding ring 46, and hinged shafts at two ends of the first rotating rod 41 and hinged shafts at two ends of the second rotating rod 42 are parallel to each other and are perpendicular to and not intersected with the axis of the casing 1.

The outer linkages 401 are provided with a plurality of pairs at regular intervals along the circumferential direction of the sliding ring 46, the inner linkages 47 are provided between two adjacent pairs of the outer linkages 401, and the inner linkages 47 are further provided with a plurality of groups at intervals along the circumferential direction of the casing 1 between two adjacent pairs of the outer linkages 401. The inner linkage 47 comprises a third and a fourth rotary rods, one end of the third rotary rod is hinged to one end of the fourth rotary rod, the other end of the third rotary rod is hinged to the outer wall of the housing 1, and the other end of the fourth rotary rod is hinged to the sliding ring 46. The lengths of the third rotating lever and the fourth rotating lever in the rotated-to-linear state should be smaller than the lengths of the first rotating lever 41 and the second rotating lever 42 in the rotated-to-linear state.

The flexible film 44 is disposed between two adjacent outer link assemblies 401, two side edges of the flexible film 44 are respectively riveted with the first rotating rod 41 and the second rotating rod 42 of the two pairs of outer link assemblies 401, and the other two side edges of the flexible film 44 are respectively riveted with the sliding ring 46 and the outer wall of the housing 1. The flexible film 44 is coated on the outer side of the inner link set 47, and the third rotating rod and the fourth rotating rod of the inner link set 47 are both fixedly bonded with the inner wall of the flexible film 44. The flexible membrane 44 may be made of waterproof cloth, or may be made of rolls of geotextile or the like, or rolls of nylon or the like, in this embodiment, the flexible membrane 44 is made of waterproof cloth.

In order to drive the sliding member to move, a second driving member is disposed on the outer wall of the housing 1, in this embodiment, the second driving member is a cylinder 45, the cylinder 45 is fixedly connected to the housing 1 through a bolt, an axis of the cylinder 45 is parallel to an axis of the housing 1, and a piston rod of the cylinder 45 is fixedly connected to the sliding member.

The implementation principle of municipal drainage pipe pull throughs of this application embodiment is: when the staff uses pull throughs to clear up the dredging device and dredge the municipal pipeline, connect the water pipe at the water inlet 11 of casing 1, put casing 1 into the pipeline, lead to water in casing 1. Water enters the shell 1 from the water inlet 11, passes through the rotating ring 32, is finally sprayed from the spray head 35 and washes the inner wall of the pipeline, and generates propelling force far away from the water inlet 11 to the shell 1 by means of the counterforce generated in the process that water flow sprayed from the plurality of spray nozzles 12 impacts the pipeline, so that the shell 1 moves forwards. Meanwhile, in the process of spraying water by the spray head 35, a reverse thrust eccentric to the axis of the housing 1 is generated on the rotating ring 32, so that the rotating ring 32 on the housing 1 rotates. In the rotating process of the rotating ring 32, the ejector rod 34 on the rotating ring 32 moves on the slope section 331 of the guide cylinder 33 close to one side of the rotating ring 32, in the process that the ejector rod 34 moves from the slope toe of the slope section 331 to the slope top, the guide cylinder 33 and the connecting rod move towards one side of the water inlet 11 of the shell 1 and drive the impact head 2 to be close to the shell 1, in the process that the impact head 2 is withdrawn, the shell 1 continues to advance to be close to the obstacle, after the ejector rod 34 crosses the slope top of the slope section 331, the ejector rod 34 rapidly moves towards the slope toe of the slope section 331 from the fall section 332, the impact head 2 rapidly leaves away from the shell 1 under the acting force of the elastic piece 31 to impact and crush the obstacle, the crushing force of the impact head 2 is large, and the pipeline dredging effect is good. When the impact head 2 impacts the obstacle, the driving mechanism 3 drives the impact head 2 to move forward, and the forward force applied by the water flow to the shell 1 acts together, so that the power blocked in the damage forward direction of the impact head 2 is larger, and the pipeline cleaning effect is further improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a municipal drainage pipe pull throughs which characterized in that: the device comprises a shell (1), wherein a water inlet (11) is formed in one end of the shell (1), a plurality of jet orifices (12) inclined towards one side of the water inlet (11) are formed in the outer wall of the shell (1), the water inlet (11) is communicated with the jet orifices (12), the jet orifices (12) are uniformly arranged at intervals along the circumferential direction of the shell (1), one end, far away from the water inlet (11), of the shell (1) is connected with a striking head (2) in a sliding mode along the axial direction of the shell (1), and a driving mechanism (3) for driving the striking head (2) to move on the shell (1) in a reciprocating mode is arranged on the shell (1);

the driving mechanism (3) comprises an elastic piece (31), a rotating ring (32), a guide cylinder (33) and a push rod (34), a mounting cavity (13) is formed in one end, far away from the water inlet (11), of the shell (1) along the axial direction of the shell, one end, close to the water inlet (11) of the shell (1), of the impact head (2) is connected into the mounting cavity (13) in a sliding mode along the axial direction of the shell (1), a strip-shaped hole (14) communicated with the mounting cavity (13) is formed in the outer wall of the shell (1), a connecting rod (21) is fixedly connected onto the impact head (2), the connecting rod (21) is connected into the strip-shaped hole (14) in a sliding mode along the axial direction of the shell (1), the rotating ring (32) is coaxially rotatably sleeved on the outer wall of the shell (1), the guide cylinder (33) is coaxially sleeved on the shell (1) and located on one side, far away from the impact head (2), of the rotating ring (32), the guide cylinder (33) is fixedly connected with the connecting rod (21), the ejector rod (34) is fixedly connected to one side, close to the guide cylinder (33), of the rotating ring (32), the end face, close to the rotating ring (32), of the guide cylinder (33) comprises a slope section (331) and a fall section (332), the slope section (331) is arranged in a circumferential inclined mode along the guide cylinder (33), the fall section (332) is axially parallel to the guide cylinder (33), the ejector rod (34) is connected to the end face, close to the rotating ring (32), of the guide cylinder (33) in a sliding mode, a first driving piece used for driving the rotating ring (32) to rotate is arranged on the shell (1), the elastic piece (31) is arranged in the installation cavity (13), and the elastic piece (31) is used for driving the impact head (2) to extend out of the shell (1).

2. The municipal drainage pipe dredging device of claim 1, wherein: first driving piece is shower nozzle (35), the inside cavity of swivel becket (32), the inner wall that swivel becket (32) is close to casing (1) has seted up the annular opening along swivel becket (32) circumference, the annular opening is arranged in the inside cavity of intercommunication water inlet (11) and swivel becket (32), jet (12) are seted up on the outer wall of swivel becket (32) to with the inside cavity intercommunication in swivel becket (32), shower nozzle (35) are connected on jet (12), the axis of shower nozzle (35) is crisscross with the axis of casing (1).

3. The municipal drainage pipeline pull-throughs of claim 1, wherein: ejector pin (34) are provided with many along rotating ring (32) circumference evenly spaced, guide cylinder (33) are gone up and are provided with multiunit slope section (331) and fall section (332) along guide cylinder (33) circumference evenly spaced, the quantity of slope section (331) is the integral multiple of the quantity of ejector pin (34).

4. The municipal drainage pipeline pull-throughs of claim 1, wherein: one end of the ejector rod (34) close to the guide cylinder (33) is rotatably provided with a roller (36), and the roller (36) is in rolling contact with the guide cylinder (33).

5. The municipal drainage pipeline pull-throughs of claim 1, wherein: one side that lies in jet (12) on casing (1) and is close to impact head (2) still is provided with trash cleaning mechanism (4), trash cleaning mechanism (4) include outer connecting rod group (401), slider and flexible membrane (44), outer connecting rod group (401) include first dwang (41), second dwang (42), the one end and the casing (1) of first dwang (41) are articulated, the other end is articulated with the one end of second dwang (42), the other end of second dwang (42) is passed through the axial slip connection of slider along casing (1) on casing (1), the one end that first dwang (41) was kept away from in second dwang (42) is articulated with slider (43), be provided with the second driving piece that is used for ordering about the slider removal on casing (1), outer connecting rod group (401) are provided with the multiunit along the even interval of circumference of casing (1), the flexible membrane (44) is arranged between two adjacent groups of outer connecting rod groups (401), and the first rotating rod (41) and the second rotating rod (42) are fixedly connected with the flexible membrane (44).

6. The municipal drainage pipe pull-throughs of claim 5, wherein: the second driving piece is an air cylinder (45), the air cylinder (45) is fixedly arranged on the shell (1), and a piston rod of the air cylinder (45) is connected with the sliding piece.

7. The municipal drainage pipe pull-throughs of claim 5, wherein: the slider includes slip ring (46), slip ring (46) coaxial cover is established on casing (1), second dwang (42) rotates with slip ring (46) and is connected, and is adjacent two sets of still follow slip ring (46) circumference interval between outer linkage (401) and be provided with a plurality of interior linkages (47), interior linkage (47) and the interior wall connection of flexible membrane (44), interior linkage (47) are used for supporting flexible membrane (44).